The font with that says happiest holidays please. Thanks!

Melany Lane  Suggeriti da SexyElvis7 

There are no duplicate letters - the Hs, As, Ss and Ps don't match up - so this may not necessarily be a font. Just preparing you for that if that is the case. However, OT does offer alternates and it's possible someone in the Collin's family used a font with lots of alternatives...

Melany Lane with a lot of stylistic alternates

Nice find Sexy